A BASIC PROGRAM FOR CALCULATING SUBSURFACE WATER TEMPERATURES USING CHEMICAL GEOTHERMOMETERS - IMPLICATION TO GEOTHERMAL RESERVOIR ESTIMATION

GEOTHERM is a computer program written in BASIC language to estimate g eothermal reservoir temperature using the well-known chemical geotherm ometers. The empirical equations used in the program were obtained fro m the literature. Three different chemical geothermometers are include d in the program: Na-K, Na-K-Ca, and silica geothermometers; this give s the user the opportunity not only to select the most reliable geothe rmometer in estimating subsurface temperature, but also to select the type of geothermometer according to available data. A sample input fil e of geothermal waters obtained from Iceland has been tested, so as to show the applicability and usefulness of the program.